/**
 *  Copyright 2002-2009 the original author or authors.
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package foo.bar.forum.security;

import foo.bar.forum.utils.Transformer;
import foo.bar.forum.domain.Role;
import foo.bar.forum.domain.User;
import org.jsecurity.authz.Permission;

import java.util.Set;
import java.util.HashSet;

/**
 * Transform {@link foo.bar.forum.domain.User}'s {@link foo.bar.forum.domain.Role} to a set
 * of jSecurity's {@link Permission}s.
 *
 * @author tmjee
 * @version $Date: 2009-03-14 14:53:07 +0800 (Sat, 14 Mar 2009) $ $Id$
 */
public class UserRoleToJSecurityPermissionTransformer implements Transformer<User, Set<Permission>> {

    public Set<Permission> transform(User user) {
        Set<Permission> effectivePermissions = new HashSet<Permission>();
        for (Role role : user.getRoles()) {
            effectivePermissions.addAll(role.getType().permission());
        }
        return effectivePermissions;
    }
}
